Plug socket-switch combination



ct. 26, 1965 .1. KONIJNENBERG ETAL 3 PLUG SOCKET-SWITCH COMBINATIONFilgd Aug. 12. 1963 1:3 3 5 37 45 IN ENT R. JOHAN KONIJNENBE IG; S

PAUL J. SCHOPHUIZEN United States Patent 2 Claims. ((l. zoo-51 Theinvent-on relates to a socket-switch combination for battery and,alternatively, automobile cigarette lighter operation of a dry shaver.The switch parts of the combined socket and switch turns the shaver onand off regardless of Whether the shaver motor is powered by battery orvia a cord inserted in the socket. A plu-gswitch of the general type isknown from German Patent No. 123,043 dated November 1, 1927.

The principle object of the invention is to provide such a device whichrequires a minimum of space and can be inexpensively manufactured.

According to the invention this is achieved in that the socket is of thecoaxial plug type having an outer contact tube concentric within asubstantially disc-shaped, rot-atably journalled switching member ofinsulating matcrial. A toggle action spring is provided to hold theswitch in ts switched positions. A flat switching contact is provided onthe switch disc at right angles to the axis of rotation and cooperateswith fixed contact springs connected to the base plate of thesocket-switch member.

In order that the invention may readily be carried into eflect, it willnow be described more fully, by way of exarnple, with reference to theaccompanying drawing which shows a presently preferred embodiment.

FIG. 1 is a plan view, partly in cross-section, of a socket-switchaccording to the invention.

FIG. 2 shows the device of FIG. 1 in a sde-elevation view and partly inan axial cross-section.

FIG. 3 is an inverted plan view of the underside of the device seen inFIG. 1.

The device shown in the drawing is provided, preferably in the mannershown, on an insulating base plate 1, for example, consisting of hardpaper, having an aperture which consists of a substantially circularpart 3 and joining thereto a lateral aperture extension 5. The aperture3, is for the greater part covered by an insulating carrier plate 7, forexample, consist-ing of a synthetic resin (see FIGS. 2 and 3) which isconnected to the base plate 1 by means of two flanged eyelets 9 and 11.Plate 7 does not cover aperture extension 5 however.

The carrier plate 7 supports a coaxial plug contact consisting of acentra] pin 13 and a contact tube 15 coaxially surrounding the -pin 13.The central contact pin 13 is provided with a collar 17 and at the rearend (in FIG. 2 the top end) with a bent flange 19 which connects the pinto the base plate. Bctween the pin collar 17 and the base plate 7 areclamped successively, an insulating ring 21, the apertured bottom 23 ofthe contact tube 15 (in FIG. 2 the upper edge), and a metal connectionstrip 25, all on one side of the carrier plate 7. On the opposite sideof plate 7 is a metal connection strip 27 and a soldering tag 29 a:1soclarnped to the base plate by the flange 19 of pin 13, shaped switchingmember 31, consist-ing of insulating material, f-or exarnple syntheticresin, is rotatably journalled. On the side of the disc-shaped switchingrneber 31, facing the base plate 1, is a flat contact 33 in a plane atright angles to the axis of rotation. Contact 33 cooperates with twostrip-shaped contact springs 35 and 37 which are approximately inalignment. The ends of contacts 35 and 37 are rem-ote frorn one anotherand are hooked into apertures 39 and 41 of the base plate 1 and are heldin these apertures by tags 43 and 45 respectvely projecting into theapertures 39 and 41.

As shown in FIG. 1 the coaxial plug contact consisting of pin 13, tube15 and the tubu-lar shaft 47 of the disc-shaped switching member 31 areat least partially within the circular part of the aperture 3. Shaft 47of switching member 31 has a radial extension 49 (sec FIG. 1) in theform of a rib which is arranged in parallel with the shaft 47 and has anend projecting beyond shaft 47 in the direction of base plate 1 (in FIG.1 directed backwards). The free end of projection 49 engages one end ofa toggle action spring 51 provided in the aperture extension 5. Theother end of that spring is connected to a tag 53 projecting in to theopening 5. AS a result of the action of this toggle action spring, theswitching member 31, has two stable switched postions, one of which isshown in FIG. 1. An axial projection 55 (FIG. 2) of the switching member31, serving as operating knob. As best shown in FIG. 1, the position ofthe contact member 31 is that in which the contact springs 35 and 37 arenot connected together.

By comparing FIGS. 1 and 2 it will be seen that contact pin 13 isconnected electrical=ly to the soldering tag 29 as well as the strip 27and via the flanged eyelet 9 to a contact strip 57 on the other side ofbase plate 1. The ether end of strip 57 is connected in an aperture 59of the base plate 1 in a manner simlar to that of the contact sprngs 35and 37. The contact tube 15 of the coaxial plug contact is connected viathe connection strip 25 and eyelet 11 to a similar connection strip 61at one end. The ether end of strip is fastened to plate 1 similar to theconnection strip 57. Strip 61 also serves as a soldering tag.

As appears from the above, by using a coaxial plug contact and using theouter contact tube 15 as the fixed shaft for the switching member 31, adevice is obtained which consists of component parts which can easily bemanufactured by pressing and punching and assembled by a single clarnpprovided by pin 13. Also, owing to the use of a substantiallydisc-shaped switching member provided with a contact at right angles tothe axis of rotation, very little space is required, in particular, inan axial direction. A furt-her decrease of the axial dimension ispossible by providing, in the manner described, the tog-gle actionspring and parts of the plug contact in the apertures 5 and 3 of thebase plate 1.

Obviously a plug socket-switch combination is useful with any batterypowered device which may also operate trom another source of energy viaa plug-in conductor.

What is claimed is:

1. A plug socket-switch combination comprising a base plate ofinsulating material, at least one aperture in said base plate, a carrierplate connected with said base plate at one side thereof and overlyingsaid one aperture, a socket tube coaxially surrounding a socket pin anda disc shaped switch member concentrically sur rounding said sockettube, said switch member being rotatably jornalled on said socket tube,said socket pin having a radial collar intermediate its ends and locatedwithin said tube, said socket pin extending at one end through saidcarrier plate, a plurality of strip conducto-rs associated with saidsocket pin and tube on each side of said carrier plate, said socket pinhaving said one end flared over said carrier plate for clamping saidsocket tube and pin and their associ-ted strip conductors and saidswitch member in =operative relaton on said carrier plate, means forbiasing said switch member in its switched positions and conductor meansconnected with said base member operatvely connected with said switchmember.

3 2. A plug socket-switch combination according to claim 1 wherein sadbase plate has a Iateral aperture extension connected with sad oneaperture and sad means for biasng sad switch member comprises a togglespring receivable in sad lateral aperture, means connect- 4 ReferencesCited by the Examiner UNITED STATES PATENTS 948,041 2/10 Buckton 20051

1. A PLUG SOCKET-SWITCH COMBINATION COMPRISING A BASE PLATE OFINSULATING MATERIAL, AT LEAST ONE APERTURE IN SAID BASE PLATE, A CARRIERPLATE CONNECTED WITH SAID BASE PLATE AT ONE SIDE THEREOF AND OVERLYINGSAID ONE APERTURE, A SOCKET TUBE COAXIALLY SURROUNDING A SOCKET PIN ANDA DISC SHAPED SWITCH MEMBER CONCENTRICALLY SURROUNDING SAID SOCKET TUBE,SAID SWITCH MEMBER BEING ROTATABLY JOURNALLED ON SAID SOCKET TUBE, SAIDSOCKET PIN HAVING A RADIAL COLLAR INTERMEDIATE ITS ENDS AND LOCATEDWITHIN SAID TUBE, SAID SOCKET PIN EXTENDING AT ONE END THROUGH SAIDCARRIER PLATE, A PLURALITY OF STRIP CONDUCTORS ASSOCAITED WITH SAIDSOCKET PIN AND TUBE ON EACH SIDE OF SAID CARRIER PLATE, SAID SOCKET PINHAVING SAID ONE END FLARED OVER SAID CARRIER PLATE FOR CLAMPING SAIDSOCKET TUBE AND PIN AND THEIR ASSOCAITED STRIP CONDUCTORS AND SAIDSWITCH MEMBER IN OPERATIVE RELATION ON SAID CARRIER PLATE, MEANS FORBIASING SAID SWITCH MEMBER IN ITS SWITCHED POSITIONS AND CONDUCTOR MEANSCONNECTED WITH SAID BASE MEMBER OPERATIVELY CONNECTED WITH SAID SWITCHMEMBER